LPC1700CMSIS_Examples - These are the examples provided for [[/users/fran…

Users » frank26080115 » Code » LPC1700CMSIS_Examples

These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!

EMAC/uIP/uip/pt.h@0:bf7b9fba3924, 2011-03-20 (annotated)

Committer:: frank26080115
Date:: Sun Mar 20 05:38:56 2011 +0000
Revision:: 0:bf7b9fba3924

Who changed what in which revision?

User	Revision	Line number	New contents of line
frank26080115	0:bf7b9fba3924	1	/*
frank26080115	0:bf7b9fba3924	2	* Copyright (c) 2004-2005, Swedish Institute of Computer Science.
frank26080115	0:bf7b9fba3924	3	* All rights reserved.
frank26080115	0:bf7b9fba3924	4	*
frank26080115	0:bf7b9fba3924	5	* Redistribution and use in source and binary forms, with or without
frank26080115	0:bf7b9fba3924	6	* modification, are permitted provided that the following conditions
frank26080115	0:bf7b9fba3924	7	* are met:
frank26080115	0:bf7b9fba3924	8	* 1. Redistributions of source code must retain the above copyright
frank26080115	0:bf7b9fba3924	9	* notice, this list of conditions and the following disclaimer.
frank26080115	0:bf7b9fba3924	10	* 2. Redistributions in binary form must reproduce the above copyright
frank26080115	0:bf7b9fba3924	11	* notice, this list of conditions and the following disclaimer in the
frank26080115	0:bf7b9fba3924	12	* documentation and/or other materials provided with the distribution.
frank26080115	0:bf7b9fba3924	13	* 3. Neither the name of the Institute nor the names of its contributors
frank26080115	0:bf7b9fba3924	14	* may be used to endorse or promote products derived from this software
frank26080115	0:bf7b9fba3924	15	* without specific prior written permission.
frank26080115	0:bf7b9fba3924	16	*
frank26080115	0:bf7b9fba3924	17	* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
frank26080115	0:bf7b9fba3924	18	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
frank26080115	0:bf7b9fba3924	19	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
frank26080115	0:bf7b9fba3924	20	* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
frank26080115	0:bf7b9fba3924	21	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
frank26080115	0:bf7b9fba3924	22	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
frank26080115	0:bf7b9fba3924	23	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
frank26080115	0:bf7b9fba3924	24	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
frank26080115	0:bf7b9fba3924	25	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
frank26080115	0:bf7b9fba3924	26	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
frank26080115	0:bf7b9fba3924	27	* SUCH DAMAGE.
frank26080115	0:bf7b9fba3924	28	*
frank26080115	0:bf7b9fba3924	29	* This file is part of the uIP TCP/IP stack
frank26080115	0:bf7b9fba3924	30	*
frank26080115	0:bf7b9fba3924	31	* Author: Adam Dunkels <adam@sics.se>
frank26080115	0:bf7b9fba3924	32	*
frank26080115	0:bf7b9fba3924	33	* $Id: pt.h,v 1.2 2006/06/12 08:00:30 adam Exp $
frank26080115	0:bf7b9fba3924	34	*/
frank26080115	0:bf7b9fba3924	35
frank26080115	0:bf7b9fba3924	36	/**
frank26080115	0:bf7b9fba3924	37	* \addtogroup pt
frank26080115	0:bf7b9fba3924	38	* @{
frank26080115	0:bf7b9fba3924	39	*/
frank26080115	0:bf7b9fba3924	40
frank26080115	0:bf7b9fba3924	41	/**
frank26080115	0:bf7b9fba3924	42	* \file
frank26080115	0:bf7b9fba3924	43	* Protothreads implementation.
frank26080115	0:bf7b9fba3924	44	* \author
frank26080115	0:bf7b9fba3924	45	* Adam Dunkels <adam@sics.se>
frank26080115	0:bf7b9fba3924	46	*
frank26080115	0:bf7b9fba3924	47	*/
frank26080115	0:bf7b9fba3924	48
frank26080115	0:bf7b9fba3924	49	#ifndef __PT_H__
frank26080115	0:bf7b9fba3924	50	#define __PT_H__
frank26080115	0:bf7b9fba3924	51
frank26080115	0:bf7b9fba3924	52	#include "lc.h"
frank26080115	0:bf7b9fba3924	53
frank26080115	0:bf7b9fba3924	54	struct pt {
frank26080115	0:bf7b9fba3924	55	lc_t lc;
frank26080115	0:bf7b9fba3924	56	};
frank26080115	0:bf7b9fba3924	57
frank26080115	0:bf7b9fba3924	58	#define PT_WAITING 0
frank26080115	0:bf7b9fba3924	59	#define PT_EXITED 1
frank26080115	0:bf7b9fba3924	60	#define PT_ENDED 2
frank26080115	0:bf7b9fba3924	61	#define PT_YIELDED 3
frank26080115	0:bf7b9fba3924	62
frank26080115	0:bf7b9fba3924	63	/**
frank26080115	0:bf7b9fba3924	64	* \name Initialization
frank26080115	0:bf7b9fba3924	65	* @{
frank26080115	0:bf7b9fba3924	66	*/
frank26080115	0:bf7b9fba3924	67
frank26080115	0:bf7b9fba3924	68	/**
frank26080115	0:bf7b9fba3924	69	* Initialize a protothread.
frank26080115	0:bf7b9fba3924	70	*
frank26080115	0:bf7b9fba3924	71	* Initializes a protothread. Initialization must be done prior to
frank26080115	0:bf7b9fba3924	72	* starting to execute the protothread.
frank26080115	0:bf7b9fba3924	73	*
frank26080115	0:bf7b9fba3924	74	* \param pt A pointer to the protothread control structure.
frank26080115	0:bf7b9fba3924	75	*
frank26080115	0:bf7b9fba3924	76	* \sa PT_SPAWN()
frank26080115	0:bf7b9fba3924	77	*
frank26080115	0:bf7b9fba3924	78	* \hideinitializer
frank26080115	0:bf7b9fba3924	79	*/
frank26080115	0:bf7b9fba3924	80	#define PT_INIT(pt) LC_INIT((pt)->lc)
frank26080115	0:bf7b9fba3924	81
frank26080115	0:bf7b9fba3924	82	/** @} */
frank26080115	0:bf7b9fba3924	83
frank26080115	0:bf7b9fba3924	84	/**
frank26080115	0:bf7b9fba3924	85	* \name Declaration and definition
frank26080115	0:bf7b9fba3924	86	* @{
frank26080115	0:bf7b9fba3924	87	*/
frank26080115	0:bf7b9fba3924	88
frank26080115	0:bf7b9fba3924	89	/**
frank26080115	0:bf7b9fba3924	90	* Declaration of a protothread.
frank26080115	0:bf7b9fba3924	91	*
frank26080115	0:bf7b9fba3924	92	* This macro is used to declare a protothread. All protothreads must
frank26080115	0:bf7b9fba3924	93	* be declared with this macro.
frank26080115	0:bf7b9fba3924	94	*
frank26080115	0:bf7b9fba3924	95	* \param name_args The name and arguments of the C function
frank26080115	0:bf7b9fba3924	96	* implementing the protothread.
frank26080115	0:bf7b9fba3924	97	*
frank26080115	0:bf7b9fba3924	98	* \hideinitializer
frank26080115	0:bf7b9fba3924	99	*/
frank26080115	0:bf7b9fba3924	100	#define PT_THREAD(name_args) char name_args
frank26080115	0:bf7b9fba3924	101
frank26080115	0:bf7b9fba3924	102	/**
frank26080115	0:bf7b9fba3924	103	* Declare the start of a protothread inside the C function
frank26080115	0:bf7b9fba3924	104	* implementing the protothread.
frank26080115	0:bf7b9fba3924	105	*
frank26080115	0:bf7b9fba3924	106	* This macro is used to declare the starting point of a
frank26080115	0:bf7b9fba3924	107	* protothread. It should be placed at the start of the function in
frank26080115	0:bf7b9fba3924	108	* which the protothread runs. All C statements above the PT_BEGIN()
frank26080115	0:bf7b9fba3924	109	* invokation will be executed each time the protothread is scheduled.
frank26080115	0:bf7b9fba3924	110	*
frank26080115	0:bf7b9fba3924	111	* \param pt A pointer to the protothread control structure.
frank26080115	0:bf7b9fba3924	112	*
frank26080115	0:bf7b9fba3924	113	* \hideinitializer
frank26080115	0:bf7b9fba3924	114	*/
frank26080115	0:bf7b9fba3924	115	#define PT_BEGIN(pt) { char PT_YIELD_FLAG = 1; LC_RESUME((pt)->lc)
frank26080115	0:bf7b9fba3924	116
frank26080115	0:bf7b9fba3924	117	/**
frank26080115	0:bf7b9fba3924	118	* Declare the end of a protothread.
frank26080115	0:bf7b9fba3924	119	*
frank26080115	0:bf7b9fba3924	120	* This macro is used for declaring that a protothread ends. It must
frank26080115	0:bf7b9fba3924	121	* always be used together with a matching PT_BEGIN() macro.
frank26080115	0:bf7b9fba3924	122	*
frank26080115	0:bf7b9fba3924	123	* \param pt A pointer to the protothread control structure.
frank26080115	0:bf7b9fba3924	124	*
frank26080115	0:bf7b9fba3924	125	* \hideinitializer
frank26080115	0:bf7b9fba3924	126	*/
frank26080115	0:bf7b9fba3924	127	#define PT_END(pt) LC_END((pt)->lc); PT_YIELD_FLAG = 0; \
frank26080115	0:bf7b9fba3924	128	PT_INIT(pt); return PT_ENDED; }
frank26080115	0:bf7b9fba3924	129
frank26080115	0:bf7b9fba3924	130	/** @} */
frank26080115	0:bf7b9fba3924	131
frank26080115	0:bf7b9fba3924	132	/**
frank26080115	0:bf7b9fba3924	133	* \name Blocked wait
frank26080115	0:bf7b9fba3924	134	* @{
frank26080115	0:bf7b9fba3924	135	*/
frank26080115	0:bf7b9fba3924	136
frank26080115	0:bf7b9fba3924	137	/**
frank26080115	0:bf7b9fba3924	138	* Block and wait until condition is true.
frank26080115	0:bf7b9fba3924	139	*
frank26080115	0:bf7b9fba3924	140	* This macro blocks the protothread until the specified condition is
frank26080115	0:bf7b9fba3924	141	* true.
frank26080115	0:bf7b9fba3924	142	*
frank26080115	0:bf7b9fba3924	143	* \param pt A pointer to the protothread control structure.
frank26080115	0:bf7b9fba3924	144	* \param condition The condition.
frank26080115	0:bf7b9fba3924	145	*
frank26080115	0:bf7b9fba3924	146	* \hideinitializer
frank26080115	0:bf7b9fba3924	147	*/
frank26080115	0:bf7b9fba3924	148	#define PT_WAIT_UNTIL(pt, condition) \
frank26080115	0:bf7b9fba3924	149	do { \
frank26080115	0:bf7b9fba3924	150	LC_SET((pt)->lc); \
frank26080115	0:bf7b9fba3924	151	if(!(condition)) { \
frank26080115	0:bf7b9fba3924	152	return PT_WAITING; \
frank26080115	0:bf7b9fba3924	153	} \
frank26080115	0:bf7b9fba3924	154	} while(0)
frank26080115	0:bf7b9fba3924	155
frank26080115	0:bf7b9fba3924	156	/**
frank26080115	0:bf7b9fba3924	157	* Block and wait while condition is true.
frank26080115	0:bf7b9fba3924	158	*
frank26080115	0:bf7b9fba3924	159	* This function blocks and waits while condition is true. See
frank26080115	0:bf7b9fba3924	160	* PT_WAIT_UNTIL().
frank26080115	0:bf7b9fba3924	161	*
frank26080115	0:bf7b9fba3924	162	* \param pt A pointer to the protothread control structure.
frank26080115	0:bf7b9fba3924	163	* \param cond The condition.
frank26080115	0:bf7b9fba3924	164	*
frank26080115	0:bf7b9fba3924	165	* \hideinitializer
frank26080115	0:bf7b9fba3924	166	*/
frank26080115	0:bf7b9fba3924	167	#define PT_WAIT_WHILE(pt, cond) PT_WAIT_UNTIL((pt), !(cond))
frank26080115	0:bf7b9fba3924	168
frank26080115	0:bf7b9fba3924	169	/** @} */
frank26080115	0:bf7b9fba3924	170
frank26080115	0:bf7b9fba3924	171	/**
frank26080115	0:bf7b9fba3924	172	* \name Hierarchical protothreads
frank26080115	0:bf7b9fba3924	173	* @{
frank26080115	0:bf7b9fba3924	174	*/
frank26080115	0:bf7b9fba3924	175
frank26080115	0:bf7b9fba3924	176	/**
frank26080115	0:bf7b9fba3924	177	* Block and wait until a child protothread completes.
frank26080115	0:bf7b9fba3924	178	*
frank26080115	0:bf7b9fba3924	179	* This macro schedules a child protothread. The current protothread
frank26080115	0:bf7b9fba3924	180	* will block until the child protothread completes.
frank26080115	0:bf7b9fba3924	181	*
frank26080115	0:bf7b9fba3924	182	* \note The child protothread must be manually initialized with the
frank26080115	0:bf7b9fba3924	183	* PT_INIT() function before this function is used.
frank26080115	0:bf7b9fba3924	184	*
frank26080115	0:bf7b9fba3924	185	* \param pt A pointer to the protothread control structure.
frank26080115	0:bf7b9fba3924	186	* \param thread The child protothread with arguments
frank26080115	0:bf7b9fba3924	187	*
frank26080115	0:bf7b9fba3924	188	* \sa PT_SPAWN()
frank26080115	0:bf7b9fba3924	189	*
frank26080115	0:bf7b9fba3924	190	* \hideinitializer
frank26080115	0:bf7b9fba3924	191	*/
frank26080115	0:bf7b9fba3924	192	#define PT_WAIT_THREAD(pt, thread) PT_WAIT_WHILE((pt), PT_SCHEDULE(thread))
frank26080115	0:bf7b9fba3924	193
frank26080115	0:bf7b9fba3924	194	/**
frank26080115	0:bf7b9fba3924	195	* Spawn a child protothread and wait until it exits.
frank26080115	0:bf7b9fba3924	196	*
frank26080115	0:bf7b9fba3924	197	* This macro spawns a child protothread and waits until it exits. The
frank26080115	0:bf7b9fba3924	198	* macro can only be used within a protothread.
frank26080115	0:bf7b9fba3924	199	*
frank26080115	0:bf7b9fba3924	200	* \param pt A pointer to the protothread control structure.
frank26080115	0:bf7b9fba3924	201	* \param child A pointer to the child protothread's control structure.
frank26080115	0:bf7b9fba3924	202	* \param thread The child protothread with arguments
frank26080115	0:bf7b9fba3924	203	*
frank26080115	0:bf7b9fba3924	204	* \hideinitializer
frank26080115	0:bf7b9fba3924	205	*/
frank26080115	0:bf7b9fba3924	206	#define PT_SPAWN(pt, child, thread) \
frank26080115	0:bf7b9fba3924	207	do { \
frank26080115	0:bf7b9fba3924	208	PT_INIT((child)); \
frank26080115	0:bf7b9fba3924	209	PT_WAIT_THREAD((pt), (thread)); \
frank26080115	0:bf7b9fba3924	210	} while(0)
frank26080115	0:bf7b9fba3924	211
frank26080115	0:bf7b9fba3924	212	/** @} */
frank26080115	0:bf7b9fba3924	213
frank26080115	0:bf7b9fba3924	214	/**
frank26080115	0:bf7b9fba3924	215	* \name Exiting and restarting
frank26080115	0:bf7b9fba3924	216	* @{
frank26080115	0:bf7b9fba3924	217	*/
frank26080115	0:bf7b9fba3924	218
frank26080115	0:bf7b9fba3924	219	/**
frank26080115	0:bf7b9fba3924	220	* Restart the protothread.
frank26080115	0:bf7b9fba3924	221	*
frank26080115	0:bf7b9fba3924	222	* This macro will block and cause the running protothread to restart
frank26080115	0:bf7b9fba3924	223	* its execution at the place of the PT_BEGIN() call.
frank26080115	0:bf7b9fba3924	224	*
frank26080115	0:bf7b9fba3924	225	* \param pt A pointer to the protothread control structure.
frank26080115	0:bf7b9fba3924	226	*
frank26080115	0:bf7b9fba3924	227	* \hideinitializer
frank26080115	0:bf7b9fba3924	228	*/
frank26080115	0:bf7b9fba3924	229	#define PT_RESTART(pt) \
frank26080115	0:bf7b9fba3924	230	do { \
frank26080115	0:bf7b9fba3924	231	PT_INIT(pt); \
frank26080115	0:bf7b9fba3924	232	return PT_WAITING; \
frank26080115	0:bf7b9fba3924	233	} while(0)
frank26080115	0:bf7b9fba3924	234
frank26080115	0:bf7b9fba3924	235	/**
frank26080115	0:bf7b9fba3924	236	* Exit the protothread.
frank26080115	0:bf7b9fba3924	237	*
frank26080115	0:bf7b9fba3924	238	* This macro causes the protothread to exit. If the protothread was
frank26080115	0:bf7b9fba3924	239	* spawned by another protothread, the parent protothread will become
frank26080115	0:bf7b9fba3924	240	* unblocked and can continue to run.
frank26080115	0:bf7b9fba3924	241	*
frank26080115	0:bf7b9fba3924	242	* \param pt A pointer to the protothread control structure.
frank26080115	0:bf7b9fba3924	243	*
frank26080115	0:bf7b9fba3924	244	* \hideinitializer
frank26080115	0:bf7b9fba3924	245	*/
frank26080115	0:bf7b9fba3924	246	#define PT_EXIT(pt) \
frank26080115	0:bf7b9fba3924	247	do { \
frank26080115	0:bf7b9fba3924	248	PT_INIT(pt); \
frank26080115	0:bf7b9fba3924	249	return PT_EXITED; \
frank26080115	0:bf7b9fba3924	250	} while(0)
frank26080115	0:bf7b9fba3924	251
frank26080115	0:bf7b9fba3924	252	/** @} */
frank26080115	0:bf7b9fba3924	253
frank26080115	0:bf7b9fba3924	254	/**
frank26080115	0:bf7b9fba3924	255	* \name Calling a protothread
frank26080115	0:bf7b9fba3924	256	* @{
frank26080115	0:bf7b9fba3924	257	*/
frank26080115	0:bf7b9fba3924	258
frank26080115	0:bf7b9fba3924	259	/**
frank26080115	0:bf7b9fba3924	260	* Schedule a protothread.
frank26080115	0:bf7b9fba3924	261	*
frank26080115	0:bf7b9fba3924	262	* This function shedules a protothread. The return value of the
frank26080115	0:bf7b9fba3924	263	* function is non-zero if the protothread is running or zero if the
frank26080115	0:bf7b9fba3924	264	* protothread has exited.
frank26080115	0:bf7b9fba3924	265	*
frank26080115	0:bf7b9fba3924	266	* \param f The call to the C function implementing the protothread to
frank26080115	0:bf7b9fba3924	267	* be scheduled
frank26080115	0:bf7b9fba3924	268	*
frank26080115	0:bf7b9fba3924	269	* \hideinitializer
frank26080115	0:bf7b9fba3924	270	*/
frank26080115	0:bf7b9fba3924	271	#define PT_SCHEDULE(f) ((f) == PT_WAITING)
frank26080115	0:bf7b9fba3924	272
frank26080115	0:bf7b9fba3924	273	/** @} */
frank26080115	0:bf7b9fba3924	274
frank26080115	0:bf7b9fba3924	275	/**
frank26080115	0:bf7b9fba3924	276	* \name Yielding from a protothread
frank26080115	0:bf7b9fba3924	277	* @{
frank26080115	0:bf7b9fba3924	278	*/
frank26080115	0:bf7b9fba3924	279
frank26080115	0:bf7b9fba3924	280	/**
frank26080115	0:bf7b9fba3924	281	* Yield from the current protothread.
frank26080115	0:bf7b9fba3924	282	*
frank26080115	0:bf7b9fba3924	283	* This function will yield the protothread, thereby allowing other
frank26080115	0:bf7b9fba3924	284	* processing to take place in the system.
frank26080115	0:bf7b9fba3924	285	*
frank26080115	0:bf7b9fba3924	286	* \param pt A pointer to the protothread control structure.
frank26080115	0:bf7b9fba3924	287	*
frank26080115	0:bf7b9fba3924	288	* \hideinitializer
frank26080115	0:bf7b9fba3924	289	*/
frank26080115	0:bf7b9fba3924	290	#define PT_YIELD(pt) \
frank26080115	0:bf7b9fba3924	291	do { \
frank26080115	0:bf7b9fba3924	292	PT_YIELD_FLAG = 0; \
frank26080115	0:bf7b9fba3924	293	LC_SET((pt)->lc); \
frank26080115	0:bf7b9fba3924	294	if(PT_YIELD_FLAG == 0) { \
frank26080115	0:bf7b9fba3924	295	return PT_YIELDED; \
frank26080115	0:bf7b9fba3924	296	} \
frank26080115	0:bf7b9fba3924	297	} while(0)
frank26080115	0:bf7b9fba3924	298
frank26080115	0:bf7b9fba3924	299	/**
frank26080115	0:bf7b9fba3924	300	* \brief Yield from the protothread until a condition occurs.
frank26080115	0:bf7b9fba3924	301	* \param pt A pointer to the protothread control structure.
frank26080115	0:bf7b9fba3924	302	* \param cond The condition.
frank26080115	0:bf7b9fba3924	303	*
frank26080115	0:bf7b9fba3924	304	* This function will yield the protothread, until the
frank26080115	0:bf7b9fba3924	305	* specified condition evaluates to true.
frank26080115	0:bf7b9fba3924	306	*
frank26080115	0:bf7b9fba3924	307	*
frank26080115	0:bf7b9fba3924	308	* \hideinitializer
frank26080115	0:bf7b9fba3924	309	*/
frank26080115	0:bf7b9fba3924	310	#define PT_YIELD_UNTIL(pt, cond) \
frank26080115	0:bf7b9fba3924	311	do { \
frank26080115	0:bf7b9fba3924	312	PT_YIELD_FLAG = 0; \
frank26080115	0:bf7b9fba3924	313	LC_SET((pt)->lc); \
frank26080115	0:bf7b9fba3924	314	if((PT_YIELD_FLAG == 0) \|\| !(cond)) { \
frank26080115	0:bf7b9fba3924	315	return PT_YIELDED; \
frank26080115	0:bf7b9fba3924	316	} \
frank26080115	0:bf7b9fba3924	317	} while(0)
frank26080115	0:bf7b9fba3924	318
frank26080115	0:bf7b9fba3924	319	/** @} */
frank26080115	0:bf7b9fba3924	320
frank26080115	0:bf7b9fba3924	321	#endif /* __PT_H__ */
frank26080115	0:bf7b9fba3924	322
frank26080115	0:bf7b9fba3924	323	/** @} */

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Type:	Program
Created:	20 Mar 2011
Imports:	199
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	7

EMAC/uIP/uip/pt.h@0:bf7b9fba3924, 2011-03-20 (annotated)

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